Hi there Most of my previous photoshop & Illustrator work has been spent with sub-100MB files on a 15" 1.5Ghz Powerbook with 1.5GB RAM. Generally that works pretty well. I print to an HP5000 using a software RIP and the quality is pretty much what I want. I landed a job which requires me to produce "actual size" artwork at approx 3000mm x 2500mm 100ppi ............ I won't be printing this one and this is what the printer needs (a bit odd I know) My Photoshop work for this job is essentially a photomontage with heavy use of layers and layer effects, the photos I'm using are a combination of Tiff and RAW (two different cameras). Also a lot of filter work on top, paint daubs, neat image, nik sharpener etc. Can't do that on a powerbook so - been dreaming of getting a G5 for some time and eventually sold the farm to get a dual core Quad and a 30" cinema - I still can't quite believe it! Enough of this waffle - I was wondering if you guys had any thoughts on how I can really optimize my new baby for photoshop bearing in mind that the job I'm working on - the working files are quite large (1.5GIG) From apple I took the standard 250GB WDC drive and standard 512 RAM. here's what I've done so far: 4 x 1GB OWC RAM (two were bad - I'm currently waiting for replacements) I've ordered a WD Raptor 10,000RPM sata drive to use as a scratch disk. I'm currently storing all my files on a FW800 lacie disk to free up the startup disk. Any suggestions on how to improve the performance would be great. Can I add another SATA drive? I think the manual says 2 max but I see three slots. I also read that photoshop can only make use of 2GB of Ram is that true? I am currently using the trial version of PS CS2 but could switch back to CS1 if that's better on performance. thanks in advance, great forums Peter p.s. feel free to tell me if I ordered the wrong upgrades, I usually do!